The hackers arrest in October 2011 stemmed from an 11-month investigation into the hacking of over 50 entertainment industry names, many of them young female stars. Hacked pictures of Johansson showed her in a state of undress in a domestic setting. Aguilera's computer was hacked in December 2010, when racy photos of her also hit the Internet. Mila Kunis' cell phone was hacked in September that year with photos of her, including one in a bathtub, spread online.According to the FBI, the hacker used open-source, public information to try to guess a celebrity's email password, and then would breach the account.